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Hello everyone, in this lesson we will talk about the precautions for graphics card maintenance

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First of all, the first one must measure whether the input voltage is short-circuited before power-on

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The input voltage here refers to the 12V of the gold finger,

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the 3V of the gold finger and the 12V voltage of the power interface.

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If we directly power on without measuring whether the input voltage is short-circuited, it may expand the fault

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Even in some specific cases, it will cause the graphics card to catch fire

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If conditions permit, you can also test all the important pins of the gold finger,

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which may help us quickly determine the fault

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The second note, if the power supply chip or MOS tube is replaced during the maintenance process,

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after the replacement, be sure to measure the ground value of the G pole of the upper tube before powering on

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If the G pole of the upper tube is suspended,

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the upper tube will be turned on automatically when the power is turned on at this time.

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After being turned on, the 12V power supply will be led to the rear pole,

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which may burn the rear pole circuit

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The third note, the power supply we use must be a genuine power supply,

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and we must not use a non-brand power supply

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That's because there are protection circuits inside the power supply circuit.

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Most graphics cards and motherboards will not immediately burn the following components

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after the MOS tube is burned.

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That's because the protection circuit inside the power supply works, and the power supply is stopped in time.

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As for power supplies of other brands, their protection circuits may be poorly done,

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so that it is possible to burn the graphics card and motherboard when the circuit fails.